body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 600px;
    text-align: center;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.question-container {
    margin-top: 30px;
}

.question-card {
    background: #ecf0f1;
    border-radius: 8px;
    padding: 20px;
    margin: 10px 0;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.question-card:hover {
    transform: scale(1.02);
}

.answer {
    display: none;
    margin-top: 10px;
    color: #27ae60;
    font-weight: bold;
}

.correct {
    color: #27ae60;
}

.incorrect {
    color: #c0392b;
}

.card--active {
    background: #3498db;
    color: white;
}

